alpinelakespilot2000
Well Known Member
Another oil pressure thread, because I couldn’t find a definitive answer in the old threads.
I have an Aerosport 0-320-D2A that has been flying for 5 years. Because I occasionally got the flaky pressure readings well documented for VDO senders, I finally swapped them out for the newer Kavlico senders. Nothing else was changed in configuration or operation.
Having said all that, the new oil pressure sender seems to read about 3-5psi higher on climb out than the old, just enough to occasionally send the oil pressure over the 100psi that is my red-line limit for warm-up and take-off. [100psi was derived from the old Lycoming manual Aerosport provided with my engine (see picture below)]. In cruise, and once the oil is 180F or above, the oil pressure maintains mid 70s psi, right in the middle of my 60-90psi green range, more or less like it did with the old senders. Over the course of 4 flights in the last two days, it never got above 105psi in full-power climb, and then settled down in the green once the oil temp increased and cruise power was set. As I also understand it, Lycoming now has newer (and higher) upper-limits for oil pressure than what were published in my manual, perhaps making that 100F maximum that I use a bit outdated any way.
My question, then, is this:
Should I worry about the occasional oil pressure excursion over 100 during climb out? If so, what would you recommend for a oil pressure that would set off my Dynon's alarm?
Thanks for any thoughts.
From the old Lycoming manual Aerosport Power sent with my new engine:
I have an Aerosport 0-320-D2A that has been flying for 5 years. Because I occasionally got the flaky pressure readings well documented for VDO senders, I finally swapped them out for the newer Kavlico senders. Nothing else was changed in configuration or operation.
Having said all that, the new oil pressure sender seems to read about 3-5psi higher on climb out than the old, just enough to occasionally send the oil pressure over the 100psi that is my red-line limit for warm-up and take-off. [100psi was derived from the old Lycoming manual Aerosport provided with my engine (see picture below)]. In cruise, and once the oil is 180F or above, the oil pressure maintains mid 70s psi, right in the middle of my 60-90psi green range, more or less like it did with the old senders. Over the course of 4 flights in the last two days, it never got above 105psi in full-power climb, and then settled down in the green once the oil temp increased and cruise power was set. As I also understand it, Lycoming now has newer (and higher) upper-limits for oil pressure than what were published in my manual, perhaps making that 100F maximum that I use a bit outdated any way.
My question, then, is this:
Should I worry about the occasional oil pressure excursion over 100 during climb out? If so, what would you recommend for a oil pressure that would set off my Dynon's alarm?
Thanks for any thoughts.
From the old Lycoming manual Aerosport Power sent with my new engine: